1. COMPATIBILITY This product is specifically designed for the following Stihl models: FC70, FC70C, FS40, FS40C. Ensure a perfect fit and maximum performance with your for STIHL trimmer with this highquality product. 2. Wide Application In addition to the FC70, FC70C, FS40 and FS40C models, this product is also compatible with a number of other models for STIHL. These include HS46, HS46C, HS56C, HS81R, HS81RC, HS81T, HS81TC, HS86R, HS86T, HT56C, KM56C, KM56RC, FS50, FS50RC, FS56, FS56C, FS56R, FS56C, FS70, FS70R, M 61, M. 61, M 6, M 1. C, M 71, M 71C, M 91 and M 91C. A comprehensive list can be found in the product description. 3. PREMIUM QUALITY This product is made of high quality materials to ensure durability and longevity. It is designed to withstand the demands of regular use and provide optimal performance in your for STIHL trimmer. 4. EASY INSTALLATION Installation of this product is quick and hassle. Simply follow the instructions (English language not guaranteed). and you have your STIHL trimmer ready to use in no time. No special tools or additional components are required.